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Can somebody tell me what would be the most recommended adjustable fuel pressure regulator for the K series to work in serie with a FMU? the main issue is to lower the fuel pressure at idle.

Really any 1:1 FMU is going to work. Paxton, aeromotive, AEM, etc all make them. Check <A HREF="http://www.summitracing.com" TARGET=_blank>www.summitracing.com</A> or <A HREF="http://www.jegs.com" TARGET=_blank>www.jegs.com</A> for 1:1 fuel pressure regulators. [img]shrug.gif"%20border="0[/img]

I already have a Vortech FMU, but it hasn´t any feature that allow to regulate the base fuel pressure, as it works in conjuntion with the stock FPR, as I decided to install larger Kl injectors on my K8 for my turbo project avoiding to run too much pressure to my fuel pump at 6-7 psi of boost. So I need to lower the base fuel pressure to keep idle and driveability, I also thought on making a device to reduce the fuel pump speed at idle thus reducing the fuel pressure, but I´m not very good at electronics, so maybe the afpr will be the better choice for what I need. Do you know any on-line turbo project that uses afpr to do the same I´m talking about? I also have an apexi s/afc to fine tune all the a/f ratio on all the rev range.

I have searched on PROBETALK and a folk recommended the COSMO RACING adjustable fpr, which is a direct bolt-on for the ford probe, so it wil be for the K8. the retail price is 100$, so it isn´t really expensive! I think that it will help me on my larger injector setup because it allow to run a range of fuel pressure from 20 to maximum fuel pump limit, for more info on ordering and pictures check:<BR> <A HREF="http://65.95.52.168/products/productlis ... &make=Ford" TARGET=_blank>http://65.95.52.168/products/productlis ... ke=Ford</A>

i have the paxton and i love it